The defrost thermostat on your fridge is an important piece of equipment which prevents your freezer from becoming too cold. The most important parts that can cause frost formation include the defrost thermostat and compressor. It would take a lot of freeze spay to chill one down. Each of these three types is tested in exactly the same way. If the defrost timer is defective, it may not advance into the defrost cycle, or it may not send power to the defrost heater during the defrost cycle. Verification is completed within 3 business days. In the defrost cycle, the defrost heater melts away any frost that may have accumulated on the evaporator coils. With Avalara CertCapture, you can add your tax exemption certificates to your PartSelect account to purchase tax-free! If the defrost heater and defrost thermostat are working properly, the defrost control board is likely defective. The compressor should turn off and the heater should turn on. If the defrost sensor fuse blows, the defrost system will not work, and the refrigerator will not defrost. If the timer does not send power to the def... rost components or advance out of the defrost cycle within 30 minutes, this indicates that the defrost timer is not advancing. To determine if the defrost timer is defective, slowly advance the dial into the defrost cycle. Do not pull on the wires themselves. Error occurred, please verify your email and try again. To determine if the defrost heater is defective, use a multimeter to test it for continuity. If you see an error, try reloading the page. Before you can test your defrost heater, you have to remove it from your refrigerator. Before replacing the defrost control board, first test the defrost heater and defrost thermostat. Verification is completed within 3 business days. If you have a side-by-side refrigerator, the defrost thermostat is found at the back of the freezer side. To begin, you need to log into or create an account with PartSelect. email once verification is done. 5. The defrost timer turns on the defrost heater several times throughout the day to melt any frost that may have accumulated on the evaporator coils. If the defrost heater and defrost thermostat are working properly, the defrost control board is likely defective. To determine if t... he defrost thermostat is defective, use a multimeter to test it for continuity. If the defrost thermostat does not have continuity when it reaches the low temperature of its operating range, replace it. When the coils within a refrigerator become too cold, the defrost timer cues the heater to click on and work to melt any excess ice buildup. Get Questions Answered Instantly. Alternatively, you could trip the appropriate switch in the circuit breaker panel, or you could remove the appropriate fuse from your home's fuse box. They are attached to terminals with slip-on connectors. If the defrost thermostat does not have continuity when it reaches the low temperature of its operating range, replace it. Model RS261MDRS/XAA - Answered by a verified Appliance Technician. Samsung Refrigerator Defrost Thermostat, Sensor Parts. Defrost heaters are available in one of three primary types: exposed metal rod, metal rod covered with aluminum tape, or a wire coil inside a glass tube. If you find that you have a bad defrost heater, and you need to purchase a new one. Defrost Timer. If the defrost thermostat of your Samsung refrigerator is damaged, the refrigerator could … If you have items in your cart, they will be saved for your return. Check to be sure the thermostat is opening at the correct temperature by placing it in water and slowly heating the water. Note: I had to replace connector on new defrost thermostat. We see you're shipping to . Defective defrost heater : Under normal circumstances the defrost heater assembly (you can get one here) is responsible for defrosting any frost that been formed on the evaporator coils in the refrigerator, whose function is to allow cold air to freely flow thereby leading to the freezer cooling.. Should you need to upload, just click the "Import your copy of this document" link in the form. Depending on the information that you enter, you may be able to add your tax exemption certificate immediately and You can purchase one from Amazon by clicking this link: @ . Most complete the circuit or close at a temp. Remove the screws or use a screwdriver to release the clips holding the panel in place. Enter your model number and our Instant Repairman will help diagnose and fix your appliance. There are three components to the defrost system: a timer, a thermostat, and a heater. The most important parts that can cause frost formation include the defrost thermostat and compressor. We'll send you expert repair help, discounts, and more! If the defrost thermostat of your Samsung refrigerator is damaged, the refrigerator could … Sort by . If the defrost heater assembly is defective, the defrost system will not work, and frost will continue to accumulate on the evaporator coils. Consult with an appliance repair technician if you do not feel you have the skill or the ability to successfully complete this repair. The defrost control board determines how often to run the defrost cycle. When the coils drop below a set temperature, the thermostat contacts close to allow power to flow to the defrost heater during the defrost cycle. You will have to remove any objects that are in your way such as the contents of the freezer, freezer shelves, icemaker parts, and the inside rear, back, or bottom panel. Exercise caution when removing the molding, as it does break fairly easily. The defrost thermostat is used to regulate the time for cooling and defrosting. The defrost sensor fuse is not resettable—if the defrost sensor fuse blows, you must replace the defrost sensor. You may need to use needle nosed pliers to help you. Before replacing the defrost control board, first test the defrost heater and defrost thermostat. Shipping all 7 days! If the main control board is defective, it may stop sending voltage to the defrost system. Use our step-by-step refrigerator repair guide to learn how to test your defrost thermostat. Locate your refrigerator's defrost thermostat. Cause 2. Hold times are long. The thermostat directs voltage to the compressor, condenser, and evaporator fan motors. The defrost thermostat is used to regulate the time for cooling and defrosting. The thermostat is wired in series with the defrost heater, and when the thermostat opens, the heater shuts off. How to test a refrigerator defrost thermostat. Locate your refrigerator's defrost thermostat. I need to test the defrost thermostat which i think is (1) -- what should it read and do i have to test it at zero degrees? If the defrost sensor fails to shut off the defrost heater, the fuse will blow in order to shut off the defrost heater. The other thing I want to do is make sure everything else is wired correctly. If the defrost timer is not advancing, replace it. If it is warm (anywhere from forty to ninety degrees Fahrenheit), then this test should produce a reading of infinity. The top heater is on the evaporator it runs around the evaporator. Gently pull on the connectors to release the wires from the terminals. We've got millions of parts, hundreds of brands, and thousands of step-by-step videos— everything you need to find it, fix it and finish the job right. There are three components to the defrost system: a timer, a thermostat, and a heater. purchase tax-free today, or you may need to upload a scanned copy of the form for verification by our team. When your thermostat is cold, it should produce a reading of zero on your multitester. Then there is another at the very top of the fridge on the back panel. If none of the defrost system components are defective, consider replacing the main control board. For more information about refrigerator defrost thermostats: All brand logos are trademarks of their respective owners. Once you have diagnosed the problem we have the OEM replacement defrost thermostat that fits your appliance. The defrost thermostat should be in the closed position when cold. We will notify you via email once verification is done. One is on the defrost heater. We carry more than 4 million parts from over 175 major brands, so chances are, we've got the part you need. Some older refrigerators may require that you remove a plastic molding before you can gain access to the freezer floor. Email. When the coils within a refrigerator become too cold, the defrost timer cues the heater to click on and work to melt any excess ice buildup. In freezer-on-top models, it may be located under the floor of the unit, or it could be found at the back of the freezer.